William ii



No Model.)

vW. H. MoKNNEY.,

NON GGNDUGTING JACKET.

30, 353,553, f Pateuued May @Mireia STATES Parent @erica \VlLLlAM ll. MCKINNEY, OF EVANSVILLE, NDINA.

NON-CONDUCTiNG JACKET.

SPECIFICATION forming part of Letters Patent No. 363,663, dated Eday 24, 1887.

Application tiled March 8, i887.

Serin] No. 233,073. (No mndel To f/,ZZ 107mm it 71mg/ concern.:

e it known that I. WILLIAM H. MCKIN- sin', acitizen ofthe United States, residing at Evansville, in the county of Vanderburg, State of indiana, -have invented certain new and useful Improvements in Non Conducting .Jackets for Steanrlipes, Src., of which the following is a specification, reference being had therein tothe accompanying drawings.

This invention comprises a novel construction of those non-eonduetingjackets which are applied to steam-pipes, boilers,domes, Ste., for thepnrpose of preventing radiation of heat, and a consequent loss,of power.

Myjacket is made .in sections of any convenientlengtb, and these sections are placed end to end, thereby forming a continuous covering inclosing a dead-air space that protects the pipe or-other channel or vessel containing steam. Each section isformed ofa single piece of sheet metal, the width of which will be determined by the diameter of the pipe to be covered, and said sheet is rolled or bent to a cylindrical shape, the opposite ends of this cylinder being cnt and slittcd longitudinally. The length of each slit will be regulated by the width oftheannular air-space, as the alternate divisions between the`slits are bent inwardly or at right angles to the plane 0f the sheet, thereby affording a'series of integral feet at the opposite ends of each section. Each section is then fitted around the pipe so as to'cause these inwaally-projecting feet 4to rest upon the exterior of thesteanrconductor, after which act a wire or other binder is wrapped around the sheet-metal cylinder to prevent the latter' coming apart. After these sheet-metal cylin ders have been thus applied to the pipe, they are completely enveloped in any approved non-condueting material, but,ifpreferred, this non-conducting material or lagging may be secured to the exterior of the metallic plates before thelatter are .fitted around the pipe, in

which event the lagging' will becut into sheets of the same length as each of said metallic sections, as hereinafter more fully described. l

InV the annexed drawings, Figure l is a perspective view of one of niy sheet-metal `cylinldersor sections in condition for application to a steanrpipe. Fig. 2 is a perspective view of this cylinder secured to the pipe. Fig. 3 is an enlarged transverse section of the steam? `closed end ot' one of these cylinders. Fig. G

an elevation showing one method ,of uniting the ends of two contiguous cylinders. Fig. T

is a plan ofa portion of a sheet adapted to tit around a steam-boiler provided with a dome.

A represents a sheet-metal plate, which usually of iron, and is eut with reference to the steam pipe or boiler or other special use to which the jacket is to be applied. This sheet is subsequently bent to form a cylinder, and its opposite ends are Cut'orslitted longitudinally, asmore clearly shown at B in Fig. 7, the length of these cuts being equal to the desired width ofdead-nir space around the steam-pipe. After being thus slitted, the alternate divisions are bent inwardly or at right angles to the plane of the cylinder,

thereby forming a series of feet, 'CWitli' tongues D'between them. Furthermore, it is preferred to slit the meeting edge ofthe cyiinf der, as at E, and bend the cut port-ion inwardly, s0 as to form feet F, of which feet any'required number may be used, according to the length of the section. The cylinder or section having been thus prepared is then opened' suiieiently to permit its ready fitting around the steam-pipe G, after which application the meeting edge of said cylinder is properiysecured. As seen at H, in Fig. 2, a wire binder is wrapped around the cylinder, while I in the same illustration, represents a metallic strip or band that secures the sheetin'etal jacket in a true cylindrical shape.v

After thejaekct has been mounted upon vvthe pipe G the cylinder is surroundedwitha nonconducting envelope or lagging. J, composed of any suitable material, and this lagging may be held in place with Wire or bands K, and be' protected with acanvas or other covering, L, This outer covering may be linaliy protected with a li-reproof paint of any desired color. After the first section has been thus applied to the steam-pipe, thesecond section can be attached in lino Wit-h the first, and so on nntii.V

the entire 'length of said pipe has been COV- ered.

From the above description it is evident the feet- U preserve the sheet-metal cylinder A a uniform distance awav from the nine G, there is an elevation showing 'the' by affording an annular dead-air space, M, around said pipe,which air-space actsas a nonconductor to prevent radiation of heat from said pipe, which radiation isl still further guarded against by the lagging or other cover or coverings of said cylinder. i

For' closing up the end of the dead-airspace L all the divisions at one end of the sheet nietal cylinder may be bent inwardly, so as to 1o rest upon the pipe, as seen at S' in Fig. 5,

which illustration shows an asbestns sheathing, N, surrounding'said pipe G, which sheathing has a metallic band or hoop, around it te prevent the feet cutting through saidsheathi5 ing. After the end of .the cylinder has thus been bentdown a. suitable non-conducting cement must be applied thereto to 'prevent the escape of not air l'roni the annular space M.

lt is immaterial how the ends of adjacent* zo seetions'are fitted together; but in Fig. 6 the tongues ci' one cylinder are shown engaged with the interdental spaces of a vcontiguous cylinder. fFig. 7 shows a plate designed fora jacket to be applied around a steam-boiler and to lit up snugly. against a dome of the latter.. Here the end of the plate has asemicircular covo, l), putin'it, the diameter of said cove being aboutegual to that of the dome.- j rfhis doved portieri is slitted at B to aii'ordA a 3o series of feet,` C", which must beef the saine length ,as the other feet of the plate. It is Aevident a sheet similar to this must be placedl around the boiler onv each side of the dome, and theirsecured in place, after which act y said sheets can be'covered, as above described.

If a lea'k should occur, or it should be desired to obtain access to the steani-pipefor any other reason, the canvas covering L can be cut at the ends of the proper seetionand the cri-uvas 4o stripped from oit the non-conducting lagging J. The latter can then be readily removed from the cylinder A, and the ties H or I being then cut said cylinder can be opened far enough to permit itsdetachnient from the pipe. The

w pipe can then-.be repaired and the jacket relagging must be of thesame length as the cyland jacket A, as seen iny Fig. 3. Thisjacket,

with its inclosi iig-covering is then bent around the pipe, and the longitndinalseaui of the covv ering and circumferential seams between each Y section are sealed up airtight by strips of canvas similar to what is seen at L. By simply cuttingthese sealing-strips each section of the pipe-'covering can be opened and separately removed without interfering with the adjacent sections.

I claim as my inventiony 1. A jacket for, steam-pipes, Sie., which jacket consists of a shect-nietalcylinder ing at itsopposite'ends a series ot" inwardlyprojecting integra-l feet ,adapted to rest upon the pipe, substantially as herein described.

2. A jacket'for steam-pipes, the., which jacket consists of a sheet-metal cylinder having at its opposite ends a series of integra-l longitudinal tongues with inwardlvprojecting integral feet between them, substantially as herein described.

3. A jacket forfsteam-pi pes, &c., which jacket consists of a'nuniber of sheet-metal cyindcrs placed end to end, each cylinder having at its opposite-ends a series of integral longi tudinal tongues with inwardly-projecting in- A tegral feet between them, and the tongues of one cylinder being arranged to engage with the interdental spaces ot' the adjacent cylilr' der, Substantially as herein described.

4. A jacket for steam-pipes, &c., which jacket consists of a number of sheet-metal cyl,-

-inders placed end to end, each cylinder hav- 

